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<Title>Surface Chart (1)</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Surface Chart (1)</p>
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<img src="images/surface.jpg" width='720' height='600'>
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This example demonstrates the basic steps in creating surface charts.<br><br>
<ul><li> Create a <a href="SurfaceChart.htm">SurfaceChart</a> object using <a href="SurfaceChart.SurfaceChart.htm">SurfaceChart.SurfaceChart</a>.<br><br>
<li> Specify the position and size of the plot region using <a href="ThreeDChart.setPlotRegion.htm">ThreeDChart.setPlotRegion</a>.<br><br>
<li> Set data to the chart using <a href="SurfaceChart.setData.htm">SurfaceChart.setData</a>.<br><br>
<li> Interpolate the data using <a href="SurfaceChart.setInterpolation.htm">SurfaceChart.setInterpolation</a> for extra smoothness of the surface.<br><br>
<li> Set the position of the color axis (the color legend) using <a href="ThreeDChart.setColorAxis.htm">ThreeDChart.setColorAxis</a>.<br><br>
<li> Add chart and axis titles using <a href="BaseChart.addTitle.htm">BaseChart.addTitle</a> and <a href="Axis.setTitle.htm">Axis.setTitle</a>.<br><br>
<li> Assign the chart to the WebChartViewer using <a href="WebChartViewer.setChart.htm">WebChartViewer.setChart</a>, and insert it to the web page using <a href="WebChartViewer.renderHTML.htm">WebChartViewer.renderHTML</a>.</ul>
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/surface.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The x and y coordinates of the grid
double[] dataX = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
double[] dataY = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

// The values at the grid points. In this example, we will compute the values using the formula z =
// x * sin(y) + y * sin(x).
double[] dataZ = new double[dataX.length * dataY.length];
for(int yIndex = 0; yIndex &lt; dataY.length; ++yIndex) {
    double y = dataY[yIndex];
    for(int xIndex = 0; xIndex &lt; dataX.length; ++xIndex) {
        double x = dataX[xIndex];
        dataZ[yIndex * dataX.length + xIndex] = x * Math.sin(y) + y * Math.sin(x);
    }
}

// Create a SurfaceChart object of size 720 x 600 pixels
SurfaceChart c = new SurfaceChart(720, 600);

// Add a title to the chart using 20 points Times New Roman Italic font
c.addTitle("Surface Energy Density   ", "Times New Roman Italic", 20);

// Set the center of the plot region at (350, 280), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(350, 280, 360, 360, 270);

// Set the data to use to plot the chart
c.setData(dataX, dataY, dataZ);

// Spline interpolate data to a 80 x 80 grid for a smooth surface
c.setInterpolation(80, 80);

// Add a color axis (the legend) in which the left center is anchored at (645, 270). Set the length
// to 200 pixels and the labels on the right side.
c.setColorAxis(645, 270, Chart.Left, 200, Chart.Right);

// Set the x, y and z axis titles using 10 points Arial Bold font
c.xAxis().setTitle("X (nm)", "Arial Bold", 10);
c.yAxis().setTitle("Y (nm)", "Arial Bold", 10);
c.zAxis().setTitle("Energy Density (J/m&lt;*font,super*&gt;2&lt;*/font*&gt;)", "Arial Bold", 10);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "", "title='&lt;*cdml*&gt;X: {x|2}&lt;*br*&gt;Y: {y|2}&lt;*br*&gt;Z: {z|2}'")
    );
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Surface Chart (1)&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Surface Chart (1)
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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